Thanks for your suggestion, Joshua.
Yes, the rule RewriteRule ^/balancer-manager$ /balancer-manager [P,L] makes
no sense. I just pick it as an example.
In fact, my rule is like "RewriteRule ^/(.*) /%{ HTTP_REFERER}/$1 [P,L]".
But Apache also returns 502 error. So I simplify my rule to "RewriteRule
^/balancer-manager$ /balancer-manager [P,L]" to confirm that the rule itself
has no error and the error must occured inside Apache itself.
According to the rewrite log, I found the the url passed to mod_proxy(
http://proxy.isoche.com:1380/balancer-manager) is correct. And that why
mod_proxy can not return the right result is what I am confused.
Any suggestion? Thanks.
Robert
On Fri, Feb 22, 2008 at 4:27 AM, Joshua Slive <[EMAIL PROTECTED]> wrote:
> 2008/2/20 Robert Balabalame <[EMAIL PROTECTED]>:
>
> >
> > ProxyPass /balancer-manager !
>
> > RewriteEngine On
> > RewriteRule ^/balancer-manager$ /balancer-manager [P,L]
>
> > Reason: DNS lookup failure for: www.mysite.com
> > But I can access http://www.mysite.com/balancer-manager successfully if
> I
> > delete the line that contains "RewriteRule ..."
>
> It seems like "DNS lookup failure" may be a red herring. But that
> RewriteRule makes no sense. What is it supposed to do? It is proxying
> a request back onto itself, which should create an infinite loop.
>
> I don't think you even need that line at all, given that you have the
> ProxyPass line above that cancels proxying for that URL. If you need
> to cancel some other rewriting, you can use
> RewriteRule ^/balancer-manager$ - [L]
>
> Joshua.
>
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